Open AccessRelay selection scheme for device‐ to‐device based 3D millimetre‐wave cellular networks
Author(s) -
Bachtobji Soumaya,
Omri Aymen,
Hassan Kais,
Bouallegue Ridha,
Raoof Kosai
Publication year - 2019
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2019.0487
Subject(s) - relay , computer science , nakagami distribution , stochastic geometry , base station , transmission (telecommunications) , outage probability , fading , reliability (semiconductor) , cellular network , probability density function , coverage probability , computer network , topology (electrical circuits) , cellular communication , electronic engineering , telecommunications , mathematics , electrical engineering , statistics , engineering , physics , channel (broadcasting) , power (physics) , confidence interval , quantum mechanics
Millimetre‐wave (mmWave) communication is a key technology for future cellular networks. However, mmWave signals may be limited in coverage since they are susceptible to blockages. In order to mitigate blockages effect and enhance the coverage probability, device‐to‐device relaying can be used to improve the direct link reliability. In this study, the authors propose a new communication scheme to enhance the successful transmission probability. This scheme is based on a selected user equipment relay that can assist the transmission from the base station (BS) to the target user. The selected relay is an available user that provides the minimum distance among the retained maximum distances (the distance between this relay and the served user, and that between the same relay and the serving BS). Based on the stochastic geometry and random shape theory, they derive the expressions of the probability density function, and the successful transmission probability within the proposed scheme under the Nakagami‐m fading assumption. Using numerical results, the derived expressions are evaluated, and the advantages of the proposed scheme are investigated. The results confirm the analytical derived expression. In addition, the performance of their proposed scheme in terms of coverage probability outperform the existing schemes.